Sort experimental app list search result groups.

ui/app_list/search_result.h

Index: ui/app_list/search_result.h
diff --git a/ui/app_list/search_result.h b/ui/app_list/search_result.h
index 5f8e371c065bf46507b0e4aaf6f09df188ddbaad..aa3a6b11c9d387877110094a2ce595a3271c84e8 100644
--- a/ui/app_list/search_result.h
+++ b/ui/app_list/search_result.h
@@ -98,7 +98,9 @@ class APP_LIST_EXPORT SearchResult {
   void set_details_tags(const Tags& tags) { details_tags_ = tags; }
 
   const std::string& id() const { return id_; }
+
   double relevance() const { return relevance_; }
+  void set_relevance(double relevance) { relevance_ = relevance; }
 
   DisplayType display_type() const { return display_type_; }
   void set_display_type(DisplayType display_type) {
@@ -146,7 +148,6 @@ class APP_LIST_EXPORT SearchResult {
 
  protected:
   void set_id(const std::string& id) { id_ = id; }
-  void set_relevance(double relevance) { relevance_ = relevance; }
   void set_voice_result(bool voice_result) { voice_result_ = voice_result; }
 
  private: